This is honestly the most original take I've ever seen on handling picky kids, and despite it being sort of in jest I can't help but think there's some potential validity. Kids tend to be pretty easy to manipulate when it comes to food (e.g. "broccoli is tiny trees!"), as long as you can find the fulcrum point from which to pivot the presentation. I hadn't considered the choice/reinforcement aspect of this before, and will keep it in mind as a harmless test concept!